Afternoon/evening flights have the greatest warming impact

Mean contrail impact per km by departure hour (gCO₂ GWP100) | Allocated to booked seats

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Negative impacts are a consequence of a negative radiative forcing of contrails, meaning a cooling effect due to condensation trails. This should not be considered as actual CO₂ offsets.

Chart: RMI GraphicSource: Estuaire pilot analysis of 2024 business air travel